package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.BaseContext;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.entity.*;
import com.itheima.reggie.mapper.OrderMapper;
import com.itheima.reggie.service.*;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

@Service
public class OrderServiceImpl extends ServiceImpl<OrderMapper, Orders>implements OrderService {
    @Autowired
    private UserService userService;
    @Autowired
    private ShoppingCartService shoppingCartService;
    @Autowired
    private AddressBookService addressBookService;
    @Autowired
    private OrderDetailService orderDetailService;
    @Transactional
    public void submit(Orders orders) {
        //获得当前用户id
        Long userId = BaseContext.getCurrentId();
        //查询当前用户购物车数据
        LambdaQueryWrapper<ShoppingCart>queryWrapper=new LambdaQueryWrapper<>();
        queryWrapper.eq(ShoppingCart::getUserId,userId);
        List<ShoppingCart> shoppingCarts = shoppingCartService.list(queryWrapper);
        if (shoppingCarts==null||shoppingCarts.size()==0){
            throw new CustomException("购物车为空,不能下单");
        }
        //查询用户数据
        User user = userService.getById(userId);
        //查询地址数据
        Long addressBookId = orders.getAddressBookId();
        AddressBook addressBook = addressBookService.getById(addressBookId);
        if (addressBook==null){
            throw new CustomException("地址有误,不能下单");
        }
        long orderId = IdWorker.getId();//订单号
        AtomicInteger amount=new AtomicInteger();
        //组装订单明细信息
        List<OrderDetail> orderDetails = shoppingCarts.stream().map((item) -> {
            OrderDetail orderDetail = new OrderDetail();
            orderDetail.setOrderId(orderId);
            orderDetail.setNumber(item.getNumber());
            orderDetail.setDishFlavor(item.getDishFlavor());
            orderDetail.setDishId(item.getDishId());
            orderDetail.setSetmealId(item.getSetmealId());
            orderDetail.setName(item.getName());
            orderDetail.setImage(item.getImage());
            orderDetail.setAmount(item.getAmount());
            amount.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());
            return orderDetail;
        }).collect(Collectors.toList());
        //组装订单数据
        orders.setId(orderId);
        orders.setOrderTime(LocalDateTime.now());
        orders.setStatus(2);
        orders.setCheckoutTime(LocalDateTime.now());
        orders.setAmount(new BigDecimal(amount.get()));//总金额
        orders.setUserId(userId);
        orders.setNumber(String.valueOf(orderId));
        orders.setUserName(user.getName());
        orders.setConsignee(addressBook.getConsignee());
        orders.setPhone(addressBook.getPhone());
        orders.setAddress((addressBook.getProvinceName()==null?"":addressBook.getProvinceName())
                +(addressBook.getCityName()==null?"":addressBook.getCityName())
                +(addressBook.getDistrictName()==null?"":addressBook.getDistrictName())
                +(addressBook.getDetail()==null?"":addressBook.getDetail()));
        //向订单表插入数据,一条数据
        this.save(orders);
        //向订单表插入数据,多条数据
        orderDetailService.saveBatch(orderDetails);
        //清除购物车
        shoppingCartService.remove(queryWrapper);
    }

    /**
     * 查询历史订单
     * @param page
     * @param pageSize
     * @param number
     * @return
     */
    @Override
    public Page oderPage(int page, int pageSize, String number) {
        Page<Orders>pageInfo=new Page<>(page,pageSize);
        LambdaQueryWrapper<Orders>queryWrapper=new LambdaQueryWrapper<>();
        queryWrapper.like(StringUtils.isNotEmpty(number),Orders::getNumber,number);//按照订单编号查询
        Page<Orders>pages= page(pageInfo,queryWrapper);

        return pages;
    }

    @Override
    public Page orderDetail(int page, int pageSize, String number, String beginTime, String endTime) {

        return null;
    }


}
